Overview of GSM and CDMA - An Overview on G.S.M. &...

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TATA Teleservices Delhi An Overview on G.S.M. & C.D.M.A.
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TATA Teleservices Delhi What is Tele- Communication ? Tele means DISTANCE and  Communication      means INFORMATION   TRANSFER  So transfer of information  between two or  more entities which may be far apart is called  as Tele-Communication
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TATA Teleservices Delhi Types of Communication tech.  Wireline  Wireless
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TATA Teleservices Delhi Communication Path Wireline Physical layout of wires or optical fiber cables between entities . A physical contact is essential between the peer entities for communication Wireless NO Physical connectivity is required . Communication is done through radio links ( Electro Magnetic Waves ) and repeaters ( CELL SITES) are placed in between peer entities for efficient communication
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TATA Teleservices Delhi What does one expects  from Wireless ?
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TATA Teleservices Delhi Lower cost  Roaming Better service and coverage NO dropped calls  Enhanced Privacy NO Speech Clipping NO Echo
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TATA Teleservices Delhi Wireless  It is type of communication technology  where electromagnetic waves carry the  signal (voice and data) on whole or part  of communication path.  Wireless telecommunication involves  converting an audio signal into a  Frequency (RF) signal and broadcasting  it using radiating devices called  antennas .  
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TATA Teleservices Delhi MSC ARCHITECTURE
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TATA Teleservices Delhi COMPONENTS OF  WIRELESS Main Switching Center (MSC) Cell Site Cells Hand set
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TATA Teleservices Delhi Main Switching Center ( MSC)   The center where the wireless switch is  situated is called of main switching  center. All the call are first come to msc  then they are then routed to their  respective handsets through cell sites  locating the shortest path to the  respective handset.
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TATA Teleservices Delhi CELL SITE A Cell site contains a BTS(Base trans- receiver system ) which manages, sends,  and receives traffic from the mobiles in its  geographical area to a cellular telephone  switch. It also employs a tower which has  antennas, and provides a microwave link  to the distant cellular switch called MSC  and Handset
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TATA Teleservices Delhi Base Trans-Receiver System  (BTS) The Base Station Subsystem controls the radio  link with the Mobile Station  It is physical  system which is installed with cell site. It has  Receiver , Transmitter and Power back up. It  receives signal and add strength to the  signals thus repeating the signal to its original  form and transmitting it again to next entity  which may be cell site or hand set  
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TATA Teleservices Delhi CELL CELL is the geographical area covered  by a cell site . All the receivers 
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This note was uploaded on 08/08/2011 for the course CS 310 taught by Professor Aartisingh during the Spring '11 term at National Institute of Technology, Calicut.

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Overview of GSM and CDMA - An Overview on G.S.M. &...

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